<http://schema.org/mainEntityOfPage>
<http://blogs.wsj.com/health/2010/08/24/pnas-paper-on-virus-chronic-fatigue-syndrome-link-has-its-own-story/>
<http://blogs.wsj.com/health/2010/08/24/pnas-paper-on-virus-chronic-fatigue-syndrome-link-has-its-own-story/>